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Mol Immunol. 1991 Oct;28(10):1131-5.

Sequence of the bovine CD44 cDNA: comparison with human and mouse sequences.

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National Animal Disease Center, USDA-Agricultural Research Service, Ames, IA 50010.


CD44 is a cell-surface glycoprotein involved in leukocyte adherence, T-cell activation and lymphocyte homing. We have isolated and sequenced a cDNA clone which encodes for bovine CD44. The predicted amino acid sequence of bovine CD44 has an overall high similarity with that of human and mouse CD44, 79.5 and 73.2%, respectively. In all three species, CD44 has a similar transmembrane region and cytoplasmic tail. In addition, all of the cysteine residues and a majority of the putative N-linked glycosylation sites in the extracytoplasmic domain are conserved between bovine, human and mouse. All three species have an area of low interspecies similarity within the extracytoplasmic domain. This area has a similarity of 34% between bovine and human, 27% between bovine and mouse, and 35% between human and mouse. The location of this area of low similarity is conserved between species.

[Indexed for MEDLINE]

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